What is CVE-2019-12966?

CVE-2019-12966 is a critical-severity vulnerability in Fehelper Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2019-06-26.

How severe is CVE-2019-12966?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Fehelper Project

CVE-2019-12966

FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {"a":(function(){confirm(1)})()} input.

EPSS: 0.024 (82.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fehelper_project Fehelper
N/a — versions n/a

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2019-12966?: CVE-2019-12966 is a critical-severity vulnerability in Fehelper Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2019-06-26.
How severe is CVE-2019-12966?: Critical severity. CVSS v3 base score is 9.8 out of 10.